Mold shakeout apparatus



May 20, 1952 M. H. KELLY MOLD SHAKEOUT APPARATUS 5 Sheets-Sheet 1 FiledSept. 10. 1948 INVENTOR.

MICHAEL H. KELLY ATTORNEY May 20, 1952 M. H. KELLY MOLD SHAKEOUTAPPARATUS 3 Sheets-Sheet 2 Filed Sept. 10, 1948 INVENTOR.

MICHAEL H.KELLY ATTORNEYS y 20, 1952 M. H. KELLY MOLD SHAKEOUT APPARATUS3 Sheets-Sheet 3 Filed Sept. 10, 1948 FIG.'3.

INVENTOR.

MICHAEL H. KELLY wimd mm ATTORNEYS Patented May 20, 1952 UNITED STATESPATENT OFFICFQv MOLD SHAKEOUT APPARATUS Application September 10, 1948,Serial No. 48,695

The invention relates to mold shake-out apparatus and refers moreparticularly to apparatus for shaking out the molding sand from themolds and from the castings in the molding sand.

The invention has for one of its objects to provide and improved moldshake-out apparatus provided with means for shaking out the molding sandand removing a casting from the mold.

The invention has for another object to so construct the mold shake-outapparatus that the casting dumping device is not affected by the devicefor shaking out the molding sand.

The invention has for a further object to provide an improved moldshake-out apparatus in which the casting is discharged from the mold onto another portion of the shake-out device to further remove moldingsand'which might ad here to the casting when discharged from a mold.

With these as well as other objects in view, the invention resides inthe novel features of construction and combinations and arrangements ofparts as more fully hereinafter set forth.

In-the drawings:

Figure -1 is a plan view of a portion of a conveyer system including amold shake-out apparatus embodying the invention.

Figure 2 is an enlarged plan view of the mold shake-out apparatus.

Figure 3 is a front elevation thereof.

Figure 4 is an end view thereof, partly broken away.

Figure 5 is an elevation partly broken away of the eccentric forefiecting the shaking out of the molding sand.

As illustrated in Figure 1, I is a conveyer for advancing in thedirection of the arrow: the lower mold section or drag 3icontainingmolding sand and castings, the upper mold section or cope having beenremoved. 4 is a compressed air cylinder, the plunger of which is adaptedto move the drag and its contained molding sand and castings on to theconveyer 5 which carries the drag'and contained molding sand andcastings to the shake-out apparatus '6 which is designed to shake-outthe molding sand. and dis-.

charge the castings from the drag after which the drag is discharged onto the conveyer 1 by the plunger of the compressed air cylinder 8..

The mold shake-out apparatus 6 comprises the shake-out device 9 and thecasting dumping device Ill. The shake-out device hasthe base i I themain grate 2 and the side plates l3nto which the main grate is fixedlysecured. Each of the side plates has secured thereto near itsiendf thebracket [4 between the upperandlower flanges 6 Claims. (01. 22. .1)

. I 2 of which are located the upper and lower rubber blocks l5'and It.The base has the brackets l'l secured thereto with each bracket having aflange extending between the upper and lower rubber blocks. Foreffecting a rapid up and down motion of the main grate an eccentricdevice IB is provided midway of the ends of the main grate, theeccentric device havin the housing l9 extending through and secured tothe side plates l3 and the eccentric 20 extending through the housingand journalled at its ends in the bearings 2i mounted on the base ll.Suitable bearings are provided between the eccentricand the housingandthe eccentric is suitably rotated as by means including the pulley 22secured to one end of the eccentric and driven by an electric motorconnected to the pulley by a belt. The main grate I2 is longitudinalllyinclined so that any castings thereon will during the rapid up and downmovement of the main grate travel downwardly along the same and finallydrop off. This construction including the base, the main grate thesideplates and the cocentric device is a standard unit made by theSimplicity Engineering Company of Durand, Michigan. For receiving thedrag with the contained molding sand and castings from the con-- veyer5, I have provided the second grate 23 which is mounted on and extendsover the main grate I2 for a part of its width. Thesecond grate isformed oi'the bars 24 extending longitudinally of and welded to the maingrate and. the transverse bars'25 welded to the bars 24. The upper edgesof these bars 24 and 25 are flush andform the surface for supporting thedrag.

This surface is inclined downwardly and inward- 1y so that when the dragis transferred by :the conveyer 5 to the second grate the drag will moveinwardly toward the longitudinal center of the shake-out device until itengages the stops formed by the upward projections 25 at the ends of thetransverse bars 25.

The dumping device 10 comprises the L-shaped members 26 fixedly securedat longitudinally spaced points'to the shaft 21 extending longitudinallyof the shake-out device above the main grate and journalled at its endsin the bearings 28 which are mounted on the supportingframes 29-carriedby the brackets 30 upon the base 'I l. Each L-shaped member 26 has thetransverse arms 31 and 32, the arms 3| in the normal position of thedumping device extending through the vertical slots33 of thelongitudinal bars 24, these slots having open upper ends. Also in thenormal position of the dumping device, the arms ly and have at theirouter ends the pro jections 34 providing stop shouldersfor pr g ing thedrag from sliding off the arms. For swinging the rockable merritfeis {Ihave 'provia the compressed air cylinder" 35 which is'piy'ot'all mountedon the fixed support 36 which is prefer ably secured to the floor.The-pistdn-ro 31:55: 4 the piston of the air cylinder is pivotally c n;

nected to the lever 38 which is fixed issuanc of the shaftZ'l. The aircylinder is of standard construction and is cushioned at both ends withthe cushion at the free end serving t'ti'locate the normal position ofthe rockable members 2B. By"

admitting compressed air to the free'end of the air cylinder the shaft21 is rotated to swing the rockable' members 26 so that their "armsI-Hwill engage the drag 3 and swing the same upwardly and angularly to asubstantially vertical posi tion at which time the upper'end portion'o'fthe drag hits the stop 39 which is in the nature of a rod extendinglongitudinally or and abovethe shake-out device. When the drag' 'hits'the' stop the castings will be thrown out of the drag' by reason oftheir momentum, and for the nu pose of -guiding these-'- castingsto themain grate -l 2 beside the second grate 23 I liaveprovided 'the guide 40which is-in the nature of aplateexterfd ing everftheadj'acent sideplate" "l3 and suitably mounted 'o'n the'base I I- as-"by means-"cr meup: rightsll. I

In operation it will be 'seen"that whn a'drag with containedm'olding'sand andcastings *con': veyed to the second grate 23 it will be ove-ud'oiirn'w'ardly"- over this gratetd a position t6 e gage-the stopsformedby the upward projections 25"'of the transverse bar's 25,-l5oth'the main grate l2 and second grat'e'23 being given 'rapidup' and down'motion by the eccentric 201 After a" suit abltime interval, duringwhich praetically' 'all of the-molding sand is" jarred-from the drag'arid castings/and dropped through'fsthe "grates, coir? pressed air isadmitted to the freeendofih'e air cylinder and'the rockable members flef the dumping device are swungto raise andswifig' the drag andcastingsuhtil-the drag assumes a substantially vertical position atwhich time it hits the'stop 39 and 'the' castings are discharged byreason of their momentum ageinst' the' g 'ul'de plate 40 and-thendirected "on to the' portio'rr of' the main-grate I 2 besidethesec'ondgratefif the conveyor 1 by the'plungercf-theair' cylirl---What I claimas myinvention 1. A mold shake-out apparatus comm-wagslongitudinally inclined main grate, a second grate mounted on andextending over said main grate for a part of its width, said secondgrate having an upper surface for supporting a mold section containing acasting, means for shaking said main and second grates, a device havingarms normally extending transversely of said second grateand=occii1iyir'i'"a 'positibn'below said upper surfaceof'sa'idsecondgrat'e,*me'ans for swinging said device in a direction moving said armsupwardly into engagement with the mold section and lifting themold-section and casting, means engageablewith" the" lifted mold sectionholding the same nsaia arms 'and providing for discharge asti'rig byitsmomentum, and a guide posltion'elfin' the path of movement of andengageabldwith---the--discharged casting to direct thesame on to saidmain grate beside said second grate?- 2. A mold shake-out; apparatuscomprising a m-ain gratfia second-grate mounted on and extencing cver a;portion of said-main grate, said second grate'having an-upper surfacefor supportinga= mold section containing a casting, means'forshaking-saidmain andsecond grates, a device having armsnormallye'xtending transversely of said second grate and occupying aposition below said upper surface" of said second grate, said devicebeing supported independently of said secandproviding for-discharge ofthe casting by its momentum and means positioned in the path of movementof the discharged casting and enga'gcable 'therewithto direct the sameon to said main grate:

-3.A-moidshake-out apparatus comprising a gratehaving anuppersurface forsupporting a mold" section-containing a casting, said grate havingupwardly opening recesses, means for shaking said grate,- a'rockabledevice supported independently of said grate and having armsnormally extending across a portion of said grate and occupy-ingaposition within the recesses and below said upper surface of saidgrate, means for swinging said'devicein a direction moving said armsupwardly-intoengagement with the mold section and lifting the moldsection and casting, and-stopmeans-for limiting the swinging, said stopmeans being'engageable with the mold section to hold the same on saidarms and provide for discharge ofthe casting by its momentum.

4. -A mold shake-outapparatus comprising a grate-' havin'g-an uppersurface for supporting a mold sectiorrcontaining a casting; said gratehaving'upwardly opening recesses, means for shaking' s'aid grater-"adevice supported independently of saidgraL-teahd having arms normallyextendhag-across a' portion of said grate and occupying a positionwithin the recesses and below said upper surface of saidgrate, and-meansfor moving said 'clevic'e ina direction raising said arms intoengagement withthe mold section and thereby raising the m'o'ldsectionand casting-away from said grate'.

5. A mold shake' out apparatus comprising a gratdhaving an upper surfacefor supporting a moldsection-contaimng a casting, said grate havingupwai'dly opening-recesses, means for shaking saidgrate, an-L-s'hapeddevice pivotally mounted-independently of said grate andhaving arms iioi'mally extending:across a portion of and 5. occupying aposition within the recesses and below said upper surface of said grate,and means for swinging said device in a direction moving said armsupwardly against the mold section and raising the mold section andcasting away from said grate.

6. A mold shake-out apparatus comprising a grate having transverselyextending bars with substantially flush upper edges for supporting amold section containing a casting, certain of said bars being providedwith vertical slots having open upper ends, means for shaking saidgrate, a rockable device supported independently of said grate andhaving arms normally extending transversely of said grate within theslots and below the upper edges of said bars and means for swinging saidrockable device in a direction raising said arms and lifting the moldsection and casting away from said grate.

IVHCHAEL H. KELLY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,069,795 Lewis Aug. 12, 19131,460,085 Watson June 26, 1923 1,768,233 Carman June 24, 1930 2,020,131Behnke Nov. 5, 1935 2,160,581 Behnke May 30. 1939 2,431,174 Henry Nov.18, 1947 2,466,650 Walker et al Apr. 5, 1949

